At 530 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Vanderbilt to near Eastern Corwith Township to near Johannesburg. Movement was east at 20 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Vanderbilt, Briley Township, Sparr, Eastern Corwith Township, and Pickerel Lake.